Tahira wants to find out all about water voles in today's episode. Chantelle heads up the river with some friends looking for signs of water voles, and Rory meets an expert on them in the city. Chantelle and Rory's fact files help answer all of Tahira questions. With the help of the Teeny Tiny Creatures poem, we discover that, like lots of other teeny tiny creatures, water voles are superheroes and help our planet in their own special way. In the Teeny Tiny Task, Chantelle and the children create water vole masks.